Abstract:

A focusing-type flashlight structure includes a hollow cylinder body for
accommodating the power supply component and screwed with an exterior cap
having the switch device at the rear side and having a buckle channel and
a protrusion stop ring and forming the diameter expansion section; a
light emitting device positioned between the buckle channel and the
protrusion stop ring of the hollow cylinder body; a light transparent
cover for sealing the front side of the hollow cylinder body and having a
protrusion hook for clasping with the buckle channel to achieve the
positioning; and a zooming device including a hollow tube having a first,
second, and third ring section with converged diameters from the front to
the rear in order, and a lens disposed between the first ring section of
the hollow tube, and a light opening cover to achieve the positioning.

Claims:

1. A focusing-type flashlight structure comprising: a hollow cylinder body
screwed with an exterior cap having a switch device at a rear side and
sheathed with a zooming device at a front side, the characterized in
that: an interior front side of the hollow cylinder body having a buckle
channel and a protrusion stop ring, an exterior front side of the hollow
cylinder body having a diameter expansion section; a light emitting
device disposed and positioned between the buckle channel and the
protrusion stop ring of the hollow cylinder body; a light transparent
cover for sealing the interior front side of the hollow cylinder body and
having a protrusion hook for clasping with the buckle channel at a rear
side of the light transparent cover to achieve positioning.

2. The focusing-type flashlight structure as claimed in claim 1, wherein
the zooming device comprises a hollow tube having a first ring section, a
second ring section and a third ring section with converged diameters
from the front to the rear in order, and a light opening cover is screwed
with a front of the first ring section, and a lens is positioned between
the first ring section of the hollow tube and the light opening cover to
achieve the positioning, and the second ring section is accommodated to
the diameter expansion section of the hollow cylinder body, and the third
ring section is disposed to the exterior portion of the hollow cylinder
body.

3. The focusing-type flashlight structure as claimed in claim 1, wherein
the hollow cylinder body has a circular concave groove disposed to a rear
of the diameter expansion section, and an 0-ring is disposed on the
circular concave groove for leaning against the zooming device.

4. The focusing-type flashlight structure as claimed in claim 1, wherein
an exterior front side of the light transparent cover has a limiting
groove, and a water stop ring is disposed in the limiting groove, and the
water stop ring leans against an interior wall of the hollow cylinder
body.

5. The focusing-type flashlight structure as claimed in claim 1, wherein
the light emitting device includes a light emitting element disposed to a
front side of a circuit board, and the circuit board is combined with a
heat dissipation base, and a reflective plate is disposed to a front side
of the light emitting element, and the light emitting element passes
through a center hole disposed to the reflective plate to protrude at a
front side of the reflective plate.

6. The focusing-type flashlight structure as claimed in claim 5, wherein
an exterior edge of the heat dissipation base leans against a side of the
protrusion stop ring of the hollow cylinder body, and a side of the light
transparent cover leans against the exterior surface of the circuit
board.

7. A focusing-type flashlight structure comprising: a hollow cylinder body
with an exterior cap having a switch device at a rear side and sheathed
with a zooming device at a front side, the characterized in that: an
interior front side within the hollow cylinder body having a buckle
channel and a protrusion stop ring, an exterior front side of the hollow
cylinder body having a diameter expansion section, a rear side of the
diameter expansion section having a circular concave groove, the circular
concave groove having an 0-ring; a light emitting device disposed and
positioned between the buckle channel and the protrusion stop ring of the
hollow cylinder body; a light transparent cover for sealing the interior
front side of the hollow cylinder body and forming a limiting groove for
accommodating a water stop ring at an exterior front side of the light
transparent cover and having a protrusion hook for clasping with the
buckle channel at a rear side of the light transparent cover to achieve
positioning.

8. The focusing-type flashlight structure as claimed in claim 7, wherein
the light emitting device comprises a light emitting element disposed to
a front side of the circuit board, and the circuit board is assembled to
a heat dissipation base, and a reflective plate is put to a front side of
the light emitting element, and the light emitting element passes through
a center hole disposed to the reflective plate to protrude at a front
side of the reflective plate.

Description:

FIELD OF THE INVENTION

[0001]The present invention relates to a focusing-type flashlight
structure, and more particularly to the focusing-type flashlight
structure that adopts the straight light shift to adjust the various
focuses.

BACKGROUND OF THE INVENTION

[0002]According to the publication patent, DE 2002006014503 shows "a rapid
zooming device for LED (light emitting diode) includes: a main body
equipped with a power device; a LED connected to the power device to
enable the LED to be fastened in the front inside of the main body; and a
convex lens disposed to the front of the LED. The convex lens can move
relative to the LED. The distance change provided by the LED relative to
the convex lens within the double focus of the convex lens."

[0003]The foregoing structure further defines that the distance provided
by the convex lens relative to the LED is at the range between 0 mm and
32 mm. However, the drawbacks are that the interior front side of the
main body needs to be processed with interior threading and the fastening
base of the light emitting element shown in the patent application also
needs to be processed with exterior threading. Moreover, since many parts
disposed to the front side of the light emitting element are not labeled
to mark numbers for illustration, the shortcomings of many parts,
complicated processing procedure, and high manufacture cost are caused.

[0004]Accordingly, to overcome the foregoing shortcomings, the inventor(s)
of the present invention based on years of experience in the related
field to conduct extensive researches and experiments, and finally
invented a novel utility structure.

SUMMARY OF THE INVENTION

[0005]The objective of the present invention is to provide a focusing-type
flashlight structure with simple structure and easy assembly.

[0006]To achieve the foregoing objective, the focusing-type flashlight
structure of the present invention includes a hollow cylinder body, a
light emitting device, a light transparent cover and a zooming device.

[0007]The inside of the hollow cylinder body can accommodate a battery.
The rear side of the hollow cylinder body has a screw hole for screwing
with an exterior cap having an exterior threaded. A switch device is
disposed to an axial direction of the exterior cap, and provided for
pressing from the exterior to control the electric conduction. The
interior front side of the hollow cylinder body has a buckle channel and
a protrusion stop ring. The exterior front side of the hollow cylinder
body forms a diameter expansion section. A circular concave groove is
located at the rear side of the diameter expansion section. An 0-ring is
disposed in the circular concave channel.

[0008]The light emitting device is disposed between the buckle channel and
the protrusion stop ring of the hollow cylinder body, and includes a
light emitting element disposed to the front side of a circuit board. The
circuit board is combined with a heat dissipation base to form a whole. A
reflective plate is further put to the front side of the light emitting
element. The light emitting element passes through a center hole disposed
to the reflective plate to protrude at the front side of the reflective
plate.

[0009]The light transparent cover seals the front side of the hollow
cylinder body. The exterior front side of the light transparent cover
forms a limiting groove for accommodating a water stop ring. The rear
side of the light transparent cover has a protrusion hook for clasping
with the buckle channel to achieve the positioning.

[0010]The zooming device includes a hollow tube that has a first ring
section, a second ring section and a third ring section with converged
diameters from the front to the rear in order. The front side of the
first ring section forms an interior threaded section that is screwed
with a light opening cover. The second ring section is provided for
accommodating the diameter expansion section of the hollow cylinder body.
The third ring section can be put to the exterior portion of the hollow
cylinder body. The zooming device also includes a lens that is put
between the first ring section of the hollow tube and the light opening
cover to achieve the positioning.

[0011]Upon the assembly of the foregoing components, it does not only
achieve the function of changing the distance between the light
transparent cover and the lens, but also simplifies the conventional
structure parts and changes the state of assembling the conventional
structure parts to achieve the improvement effect of convenient assembly
procedure while shifting the hollow tube at a straight-line.

[0012]Other features and advantages of the present invention and
variations thereof will become apparent from the following description,
drawings, and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013]FIG. 1 is a decomposition chart of the structure according to a
preferred embodiment of the present invention;

[0014]FIG. 2 is a cross-sectional drawing of the structure assembly
according to a preferred embodiment of the present invention;

[0016]FIG. 4 is an operation drawing of the structure according to a
preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017]The present invention will be apparent from the following detailed
description, which proceeds with reference to the accompanying drawings,
wherein the same references relate to the same elements.

[0018]Please referring FIG. 1 to FIG. 4, a focusing-type flashlight
structure is shown according to a preferred embodiment of the present
invention. The structure includes a hollow cylinder body 10 for
accommodating a power supply component 20. The power supply component 20
shown in the embodiment is a battery box for containing a plurality of
batteries. The rear side of the hollow cylinder body 10 has a screw hole
11 for screwing with an exterior cap 30 having an exterior threaded 31.
The inside of the exterior cap 30 has a power switch device. The power
switch device is pressed from the outside to control the electric
conduction (since the power switch device of the exterior cap 30 is a
conventional structure and is not the technical improvement of the
present invention, there is no need to illustrate in detail). The front
inside of the hollow cylinder body 10 has a light emitting device 40 and
a light transparent cover 50. A zooming device 60 is put to the front
exterior of the hollow cylinder body 10. By using the foregoing
components, the entire structure is assembled.

[0019]A buckle channel 12 and a protrusion stop ring 13 are sequentially
disposed to the interior front side of the hollow cylinder body 10. A
diameter expansion section 14 is formed at the exterior front side of the
hollow cylinder body 14. A circular concave groove 15 is located at the
rear of the diameter expansion section 14. An O-ring 16 is accommodated
in the circular concave groove 15.

[0020]The light emitting device 40 is disposed and positioned between the
buckle channel 12 and the protrusion stop ring 13 of the hollow cylinder
body 10, and includes a light emitting element 41 disposed to the front
side of a circuit board 42. The circuit board 42 is combined with a heat
dissipation base 43 to form a whole. A reflective plate 44 is put to the
front side of the light emitting element 41. The light emitting element
41 passes through a center hole 441 disposed to the reflective plate 44
to protrude at the front side of the reflective plate 44. The exterior
edge of the heat dissipation base 43 can lean against a side of the
protrusion stop ring 13. A side of the light transparent cover 50 can
lean against the exterior surface of the circuit board 42.

[0021]The light transparent cover 50 can seal the front side of the hollow
cylinder body 10. The exterior front side of the light transparent cover
50 forms a limiting groove 51. A water stop ring 52 is accommodated in
the limiting groove 51. The rear side of the light transparent cover 50
has a protrusion hook 53 for clasping with the buckle channel 12 of the
hollow cylinder body 10 to achieve the positioning. After the light
transparent cover 50 is fastened to the front exterior of the hollow
cylinder body 10, the exterior edge of the water stop ring 52 can lean
against the inner wall of the front side of the hollow cylinder body 10
to have the waterproof function between the hollow cylinder body 10 and
the light transparent cover 50.

[0022]The zooming device 60 includes a hollow tube 61 and a lens 63. The
hollow tube 61 can cover the front side of the hollow cylinder body 10 to
perform the shift adjustment of straight line at the proper distance. The
hollow tube 61 has a first ring section 611, a second ring section 612
and a third ring section 613 with converged diameters from the front to
the rear in order. The front side of the first ring section 611 forms an
interior threaded section 6111 and is screwed with a light opening cover
62 having an exterior threaded section 621. The second ring section 612
can be provided for accommodating the diameter expansion section 14 of
the hollow cylinder body 10. The third ring section 613 can be put to the
exterior portion of the hollow cylinder body 10. The lens 63 is put
between the first ring section 611 of the hollow cylinder body 61 and the
light opening cover 62 to achieve the positioning. The lens 63 shown in
the embodiment adopts a convex lens that is illustrated in detail. One
side surface of the lens can lean against the intersection surface of the
first ring section 611 and the second ring section 612 where another side
surface can leans against the relative surface of the light opening cover
62.

[0023]Upon the assembly of the foregoing components, the hollow tube 61 of
the zooming device 60 can be shifted via the straight line to change the
focus length between the lens 63 and the light emitting element 41 of the
light emitting device 40. When the hollow tube 61 continuously shifts
toward the light extraction direction, the side edge of the diameter
expansion section 14 of the hollow cylinder body 10 can be fitted and
stopped at the intersection surface between the second ring section 612
and the third ring section 613 of the hollow tube 61 to prevent the
hollow tube 61 from coming off the hollow cylinder body 10.

[0024]Each component structure, the position and the assembly manner of
the focusing-type flashlight structure of the present invention are
illustrated as the foregoing paragraphs. The practical effect and the
features achieved by the present invention are further illustrated as the
following:

[0025]Since the interior front side of the hollow tube of the present
invention is directly equipped with a buckle channel and a protrusion
stop ring, the protrusion stop ring can be utilized to perform the
limiting function directly after the light emitting device is assembled
to the interior front side of the hollow tube. Subsequently, the
protrusion hook of the light transparent cover fastened and inserted to
the buckle channel can be continuously executed. The structure shape is
unlike the conventional screwing manner that consumes time and has
inconvenience. The assembly convenience of the present invention is
therefore improved.

[0026]Moreover, since a water stop ring is put between the inside of the
hollow tube and the light transparent cover and an 0-ring is disposed
between the hollow tube of the zooming device and the exterior portion of
the hollow cylinder body, the waterproof effect provided by the front
section of the focusing-type flashlight structure can be achieved.

[0027]Although the invention has been described with reference to specific
embodiments, this description is not meant to be construed in a limiting
sense. Various modifications of the disclosed embodiments, as well as
alternative embodiments, will be apparent to persons skilled in the art.
It is, therefore, contemplated that the appended claims will cover all
modifications that fall within the true scope of the invention.